July 2001 - Zope-Dev

Problems with "skip_unauthorized" in Zope 2.4 b3
by Joachim Werner 23 Jul '01

23 Jul '01

Hi! Before putting this into the bug tracker I'd like to ask you if anybody else has experienced problems with the "skip_unauthorized" option of the tree and in tags under 2.4? I did some preliminary tests and have the feeling that Zope 2.4 protects "tpValues" in a way that prevents the "skip_unauthorized" option from working. Instead of a tree that just doesn't show the protected branches I always get a login prompt ... Cheers Joachim

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Property Storage Bloat Question
by Chris Withers 22 Jul '01

22 Jul '01

Hi, If I store a moderately frequently changed property on a Folder will only the folder object get tacked on the end of Data.fs when the folder changes or will it be the folder object plus all the objects in the folder? cheers, Chris

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RE: [Zope-dev] ZCatalog Bug: scope for the problem
by sean.upton＠uniontrib.com 22 Jul '01

22 Jul '01

Perhaps I am not understanding correctly, but do you have this same problem with a field index for methods as well as properties? Have you tried this on values other than integers? I have, for example, an item that has a method called firstLetter() that obtains title[0:1] and returns it as a string; sort_on='firstLetter' seems to work just fine (2.3.2), even though the return value has many duplicates among the thousands of objects I am sorting; I have not tried sorting on a property for a field index in this manner, though... On an unrelated note (I figured I might as well ask while I'm at it), does anyone know if there is a way to get sort_on to work for field indexes that store dates? sort_on and sort_order seem to be meaningless when applied to indexes containing dates... I assume that a corrective behavior might be to turn the date into a string or an integer (UNIX time, for example) via an indexed method; I just wonder if there is something easier that anyone knows of? Sean -----Original Message----- From: Chris Withers [mailto:chrisw@nipltd.com] Sent: Saturday, July 21, 2001 1:01 AM To: zope-dev(a)zope.org Cc: Andreas Jung Subject: [Zope-dev] ZCatalog Bug: scope for the problem > I'm doing something simple: > > return catalog.searchResults(sort_on='dateofpublication') > > ...and getting something horrible: > > Error Type: TypeError > Error Value: unsubscriptable object Further scoping out this problem has expanded it: - this bug isn't limited to 2.4.0bx, it's also manifests at least in 2.3.2 and probably in 2.3.1+. ...and narrowed it: - the bug occurs when you sort on an index where more than one indexed item has the same value. For example, if: x=SimpleItem() y=SimpleItem() z=Simpleitem() x.fred=1 y.fred=1 z.fred=2 ...now if you have a FieldIndex called 'fred' and catalog this lot, you'll get the error when you do a search along the lines of: r = Catalog(sort_on='fred') However, if you changed it so y.fred=2 and z.fred=3, you wouldn't get any unexpected behaviour :-S It appears that IITreeSet objects don't like being subscripted. That sounds kindof weird, but then it doesn't look like IITreeSets should be appearing in that context anyhow... Help! Chris _______________________________________________ Zope-Dev maillist - Zope-Dev(a)zope.org http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )

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ZCatalog Error in 2.4.0b2
by Chris Withers 21 Jul '01

21 Jul '01

Hi, I'm doing something simple: return catalog.searchResults(sort_on='dateofpublication') ...and getting something horrible: Error Type: TypeError Error Value: unsubscriptable object File /usr/local/zope/2.4.0b2_base/lib/python/Products/PythonScripts/PythonScript.py, line 362, in _exec (Object: latest_articles) (Info: ({'script': <PythonScript instance at 8cb0048>, 'context': <Folder instance at 85996a8>, 'container': <Folder instance at 85996a8>, 'traverse_subpath': []}, (), {}, None)) File Script (Python), line 4, in latest_articles (Object: guarded_getitem) File /usr/local/zope/2.4.0b1_base/lib/python/Products/ZCatalog/Lazy.py, line 94, in __repr__ File /usr/local/zope/2.4.0b1_base/lib/python/Products/ZCatalog/Lazy.py, line 223, in __getitem__ TypeError: (see above) What's going on? cheers, Chris

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ZCatalog: instantiate vs __getitem__
by Chris Withers 21 Jul '01

21 Jul '01

Hi, What's the difference between Catalog.__getitem__ and Catalog.instantiate? When should either be used? cheers, Chris

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ZCatalog sorting questions
by Chris Withers 20 Jul '01

20 Jul '01

Hi, Wow, ZCatalog is interesting :-S How does the sorting in line 674 and 684 of Catalog.py interact with the sorting in lines 566, 581-587, 598-616? To an amateur like me it looks like it re-sorts irrespective of the sorting already in the index (which I thought was done to make things fast) and nulifies any benefits of earlier attempts to lazify results sets. Particulary the r.reverse in line 684 if you choose to reverse your sort order... I'm hoping someone can explain this all to me, I really am starting to loose hair :-S cheers, Chris

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More ZCatalog Stuff
by Chris Withers 20 Jul '01

20 Jul '01

Hi Again :-) What does this method from Line 366 of Catalog.py do: def reindexIndex(self,name): for p in self.paths.items(): print p ...the print is definitely a bad thing, what should it do? cheers, Chris PS: Chris M: sorry if you're no longer the person to send this too, just let me know who it should go to now :-)

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Extra Bad CVS Checkotu Problem
by Chris Withers 20 Jul '01

20 Jul '01

It looks like a symlink to the DC folder has somehow ended up in the DC folder! This DC folder contains all the products and the symlink again, meaning you get a recursive CVS checkout that never ends. A bit like having a relative link without a BASE ref in a DTML method, 'cept much much slower :-( Is anyone else seeing this? cheers, Chris

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New CVS org Weirdness?
by Chris Withers 20 Jul '01

20 Jul '01

Hi, Is it intentional that when you now check out the Zope module, you don't get any of the products in lib/python/Products? cheers, Chris

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Re: [Zope-dev] RAM Cache Manager "next_cleanup" not working?
by J�lio Dinis Silva 20 Jul '01

20 Jul '01

>No, it's not supposed to work. :-) Create another DTML method and >associate it with the same cache manager, then view the new DTML >method.This will cause ZCache_set() to be called and *then* the cache >will be cleaned up. > >What you really want to use is the max_age parameter. (It might only >be in Zope 2.4.x.) You want the cache of the DTML method to expire >after a certain time period, right? Use max_age. When the cache >retrieves an expired cache entry, the entry will be removed and later >replaced. > >Each parameter serves a very distinct purpose. The max_age parameter >is meant for cache duration control. The threshold parameter is >meant for balancing memory use with cache size. And the cleanup >interval is to balance memory management with cache performance >overhead. Does that make sense? Ok now THAT makes sense. Because I was thinking that the cleanup interval was used to do what max_age is going to do when it arrives. For now we've hacked our RAM Cache Manager to put cleanup interval to work how we wanted untill we upgrade do 2.4.x. Thanx again for your replies Shane, Best Regards, Julio Dinis Silva _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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